I've recently joined the mailing list as a member of NorZIG (Norwegian
Z39.50 Interest Group). We had a meeting last week, preparing a final
1.0 version of the NorZIG profile for SRU. Our discussions led to a
couple of issues we couldn't resolve on our own, so I bring them to the
mailing list hoping that someone can help.
1. The profile is based on the NorZIG Z39.50 profile, and we design the
SRU profile to support for the same kind of queries as the Z39.50
profile. Many of the necessary indexes are defined in the Bath, CQL,
Dublin Core and Record Metadata context sets, but we had to create a
NorZIG context set to define all required indexes (series title and
corporate and conference name, for example). Since our first draft, the
CQL Bibliographic Searching Proposal has been published on the SRU
website. Many of the indexes from the NorZIG context set are defined in
the bib context set described in this document, so we would rather use
them than create our own. The last version of the document is dated
August 7, 2006. Does anyone know the status of this document? Will a
final version of the profile and the bib context set be published
officially in the near future?
2. A context set has a short name and a unique identifier. According to
the documentation on the website (<URL:
http://www.loc.gov/standards/sru/cql/index.html#context >): "These short
names may be sent as a mapping within the query itself (see next), or be
published by the recipient of the query in some protocol dependent
fashion." Is the IndexInfo part of the Explain document such a mapping
“published by the recipient of the query in some protocol dependent
fashion”? Does it mean that all short names described in the Explain
document can be used directly without binding them to URIs in the query?
My interpretation is that such a binding in the query is
useful/necessary only when the client wants to use a different short
name for a context set than what the server has defined. Is that a
3. We want to publish the NorZIG context set when version 1.0 is ready.
This can be done by providing the information to the SRU maintenance
agency, according to the website. Is there an official way to register
the URI for the context set?
Tor Arne Dahl
Tor Arne Dahl
Oslo University College
Faculty of Journalism, Library and Information Science